Which of the following compounds will show the maximum
Question:

Which of the following compounds will show the maximum ‘enol’ content?

1. $\mathrm{CH}_{3} \mathrm{COCH}_{2} \mathrm{COOC}_{2} \mathrm{H}_{5}$

2. $\mathrm{CH}_{3} \mathrm{COCH}_{2} \mathrm{COCH}_{3}$

3. $\mathrm{CH}_{3} \mathrm{COCH}_{3}$

4.  $\mathrm{CH}_{3} \mathrm{COCH}_{2} \mathrm{CONH}_{2}$

Correct Option: , 2

Solution:

Enol content $\propto$ Acidity of active methylene hydrogens.

Maximum enol content